198 PROBABLE OCCURRENCE OF ALDROVANDA VESICULOSA IN N.S.W. 



minute aquatic animals. The stigmas, when the flower rises to 

 the surface, obtain the pollen through the action of insects 

 (Schenk). Irrespective of seedlings, the plant hibernates from 

 leaf-buds (Leiboldt). Vascular bundles in the leaves are wanting 

 (Oels). Aldrovanda, as a genus, differs solely from Drosera in 

 its vegetative organs, the external aspect being much that of D. 

 stolonifera from West Australia; and here it should also be 

 remarked, that the great differences exhibited in habitual respect 

 and leaf-organisation by species of Utricularia count not as of 

 generic value, U. stellaris being even provided with a whorl of 

 turgid float-organs under the raceme, consisting of metamorphosed 

 leaves. 



EXPLANATION OF PLATE XVI. 



Aldvovanda veskidosa. 



Fig. 1. A whorl of leaves. 

 Figs. 2 and 3. Separate leaves. 

 Fig. 4. Flower unexpanded. 

 Fig. 5. Flower expanded. 



